Soil water content map construction using microwave sensor and agro-hydrological model**

使用微波传感器和农业水文模型构建土壤含水量图**

• 批准号: 535914-2018
• 负责人: Liu, Jinfeng
• 金额: $ 1.82万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=657762
• 关键词: Soil; water; content; map; construction

Freshwater scarcity is one of the biggest global risks due to population growth and climate change. Agriculture accounts for about 70% total fresh water consumption. In the current practice, the agriculture irrigation efficiency is estimated to be around 50% to 60% due to poor irrigation strategy. Thus an important step towards managing water crisis is to increase the irrigation efficiency to have precision irrigation. One important step towards the precision irrigation is to close the irrigation decision making loop to form a closed-loop irrigation system. Preliminary studies have shown that closed-loop operation can lead to a significant saving of water. In the development of such a closed-loop irrigation system, one critical step is to measure the water content inside the soil. ****Beyond Agronomy Inc. provides leading edge agronomic services in Western Canada. One strategic direction of Beyond Agronomy Inc. is to develop closed-loop irrigation solutions. Today, farms have access to soil moisture probes or hand feel methods to determine soil moisture content. However, these methods do not account for the variability in soil moisture that exists across each field given changes in topography, soil texture and crop management history. ****In this project, we work with Beyond Agronomy Inc. to develop a way to construct the soil water content map using microwave sensors and agro-hydrological modeling. A water content map is a critical element on the road towards closed-loop irrigation. The success of this project will enable Beyond Agronomy to move towards the development of closed-loop irrigation. It is anticipated that the successful development of closed-loop irrigation solutions would bring revolution to agriculture irrigation and contribute significantly to irrigation water conservation.

由于人口增长和气候变化，淡水短缺是全球最大的风险之一。农业用水约占淡水总消耗量的70%。在目前的实践中，由于灌溉策略不佳，农业灌溉效率估计在50%至60%左右。因此，治理水危机的重要一步是提高灌溉效率，实现精准灌溉。封闭灌溉决策回路，形成闭环灌溉系统，是实现精准灌溉的重要一步。初步研究表明，闭环操作可以显著节约用水。在开发这种闭环灌溉系统的过程中，一个关键步骤是测量土壤中的水分含量。****Beyond Agronomy Inc.在加拿大西部提供领先的农艺服务。Beyond Agronomy Inc.的一个战略方向是开发闭环灌溉解决方案。今天，农场可以使用土壤湿度探测器或触摸方法来确定土壤水分含量。然而，这些方法没有考虑到由于地形、土壤质地和作物管理历史的变化而存在的土壤湿度的变异性。****在这个项目中，我们与Beyond Agronomy Inc.合作开发了一种利用微波传感器和农业水文模型构建土壤含水量图的方法。在实现闭环灌溉的道路上，含水量图是一个关键因素。该项目的成功将使Beyond Agronomy朝着闭环灌溉的发展迈进。预计闭环灌溉解决方案的成功开发将给农业灌溉带来革命，并对灌溉用水的保持作出重大贡献。